例文
- もっと例文: 1 2 3 4 5 6
- The oxygen isotope ratios in their shells are used as proxies for temperature.
- Oxygen isotope ratios are not perfect proxies, however.
- Chondrite meteorites are classified using the oxygen isotope ratios.
- Oxygen isotope ratios are measured relative the standard, V-SMOW ( Vienna Standard Mean Ocean Water ).
- The raw material used has a higher oxygen isotope ratio than all other sources of white nephrite in East Asia.